5/23/2014 7:15 AM PDT

Boxing champ Adrien Broner made a homeless man's day ... week ... month ... and probably year -- when he gave the guy $1,000 IN CASH last night ... and the reaction might make you cry.

The reigning WBA International Super Lightweight noticed the guy panhandling on a street corner ... and with a wad of $100s in his hand, turns to the camera and says "Now this is gonna make his f**king day right here."

He was right ... and when the homeless man didn't think it could be real, Broner gave him a fist pound to prove it was legit.